I have 2003 Monte ss, and for the past year or so I have had issues with my driver side door, It will not shut correctly, I have to slam it hard for it to shut, but it still doesnt hit the door switch so the "door ajar" and interior lights stay on (untill i hit 10mph they they shut off) but I was thinking its the door pin, but every parts place i go to says it doesnt show up that they make door pins for it. are they right or is there a special part?